Preimmunization
[医] 幼儿期免疫接种
🗣️ 情景例句
Now for the hard part.
现在到了最难的部分。
He gave a lecture on agriculture.
他作了一个关于农业的讲座。
The Scandinavian countries are much admired all over the world for their enlightened social policies.
斯堪的纳维亚半岛各国实行开明的社会政策，受到全世界的推崇。